Hi tujetr,

Stock pulleys on most derailleurs are made of plastic, which makes them susceptible to flex and premature wear.

Here's why you should upgrade to Kogel Ceramic Pulleys:

• Larger pulleys reduce chain deflection...a fancy way of saying "lower friction"
• Larger pulleys mean slower rotating bearings...yet another way of saying "lower friction"
• Bomb-proof stiffness for snappy shifting
• 7075 Aluminum for longer life than stock plastic pulleys

Shop Now →

 

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